United States. Environmental Protection Agency. Office of Air and Radiation. (2000). Air quality index: A guide to air quality and your health. U.S. Environmental Protection Agency, Air and Radiation.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Air and Radiation. Air Quality Index: A Guide to Air Quality and Your Health. Washington, D.C.: U.S. Environmental Protection Agency, Air and Radiation, 2000.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Air and Radiation. Air Quality Index: A Guide to Air Quality and Your Health. U.S. Environmental Protection Agency, Air and Radiation, 2000.
Warning: These citations may not always be 100% accurate.